CN106750663A - A kind of encapsulant and preparation method thereof - Google Patents
A kind of encapsulant and preparation method thereof Download PDFInfo
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- CN106750663A CN106750663A CN201710037765.6A CN201710037765A CN106750663A CN 106750663 A CN106750663 A CN 106750663A CN 201710037765 A CN201710037765 A CN 201710037765A CN 106750663 A CN106750663 A CN 106750663A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0607—Rubber or rubber derivatives
- C09K2200/0612—Butadiene-acrylonitrile rubber
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention provides a kind of encapsulant, it is obtained by including following raw material, the filler of the rubber of 18~28 weight portions, the resin of 5~10 weight portion, the vulcanization aid of 5~9 weight portions, the age resistor of 3~5 weight portions, the fiber of 20~45 weight portions and 25~40 weight portions.Present invention also offers a kind of preparation method of encapsulant.The present invention starts with from the proportioning of encapsulant, using specific combination of materials, it is auxiliary in the proper ratio, in conjunction with distinctive preparation technology, the encapsulant with preferable performance is obtained, the encapsulant process does not need solvent or water, and process environmental protection is not related to the problem of solvent discharge, recycling and sewer.
Description
Technical field
The invention belongs to encapsulant preparing technical field, more particularly to a kind of encapsulant and preparation method thereof.
Background technology
Encapsulant refers to just that can bear seam displacement to reach airtight, watertight and oily close purpose, and flush mounting, building
Etc. the material in seam.Encapsulant be almost related to it is all of industry and civil area, national defence, chemical industry, coal, oil,
Playing the role of for the aspects such as metallurgy, communications and transportation, machine building industry and Aero-Space is important.Encapsulant is with its form
It is divided into fluid encapsulation material, not fluid tight material, dynamic sealing and the major class of static seal four, including pump sealing, hydraulic packing, method
Orchid sealing, equipment sealing, faying face sealing and auxiliary seal etc., can be configured to liquid or paste when in use, apply
Between the contact surface of two parts, solidify under certain conditions or sealed in non-drying putty；Can also be processed into
Variously-shaped solid or hollow ring seals between being arranged on the contact surface of two parts.The former claims encapsulant only to use
In static seal position of the two component contact faces without relative motion；The latter claims encapsulant to can be not only used for static seal position, can use again
There is the dynamic sealing position of relative motion in the contact surface of two parts.
Encapsulant typically has good physical and mechanical property, resilience is high, compression set is small, sealing can
The advantages of by, easy to process and long service life.As silicone rubber sealant energy high temperature resistant and low temperature, radiation hardness, vacuum-resistant, without dirt
Dye, it is nontoxic；Polysulfide rubber sealant has excellent resistance to aviation fuel performance, is also exactly high temperature resistant, high pressure resistant and rub resistance
Etc., these are all the dominant directions for sealing industry, and the quality of encapsulant directly affects the production efficiency of mechanical body equipment, right
The service efficiency of equipment has a great impact.
Seal material has metal material (aluminium, lead, indium, stainless steel etc.), also there is nonmetallic materials (rubber, plastics, pottery
Porcelain, graphite etc.), composite (such as rubber-asbestos board, aerogel blanket-polyurethane), as commonly use sealing member material if include gold
Category spirotallic gasket, metal ring gasket, graphite reinforced gasket, metal jacketed gasket, Tetrafluoro spacer, non-asbestos pad, without asbestos pad
Piece, rubber sheet gasket, electronic isolation pad etc., but using it is most be heat-resistant powder filler material.
In existing production system, the process technology of usual rubber based elastic encapsulant be mainly compressed into a method and
Copy and follow the example of two kinds of techniques, process needs to use solvent or water, be related to solvent recovery treatment and sewer problem, and with
Pay attention to day by day of the whole society for environmental protection, every profession and trade is also carrying out consistent efforts to emission reduction pollution treatment.Thus,
The solvent and sewer produced in these production processes, are increasingly becoming relevant enterprise and focus on one of matter of utmost importance of solution.
Therefore, a kind of encapsulant and preparation method thereof how is obtained, is not related to solvent recovery and sewage in production process
Pollution sources are processed by discharge from source, it has also become many production firms widely one of focus of attention in the industry.
The content of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of encapsulant and preparation method thereof, this hair
The encapsulant process of bright offer do not need solvent or water, process environmental protection, be not related to solvent discharge, recycling and
The problem of sewer, and the encapsulant for preparing has preferable performance.
The invention provides a kind of encapsulant, it is obtained by including following raw material：
Preferably, the rubber includes nitrile rubber, isoprene rubber, butadiene-styrene rubber, natural rubber and ACM
In one or more；
The vulcanization aid includes two kinds in Sulfur, peroxide, MBT, zinc oxide and magnesia
Or it is various；
The resin includes the one kind or many in epoxy resin, ABS resin, phenolic resin, polyester resin and polyamide -66
Kind.
Preferably, the age resistor includes tetramethylthiuram disulfide, BHT stabilizer, prevents old
One or more in agent 4010, antioxidant 4010NA and anti-aging agent RD；
The fiber is included in PPTA, cellulose fibre, carbon fiber, glass fibre and ore deposit fibre
One or more；
Described filler includes barium sulfate, mica, vermiculite, fumed silica, kaolin, precipitated calcium carbonate, barite
With one or more in wollastonite.
Present invention also offers a kind of preparation method of encapsulant, by comprising the following steps：
1) after rubber, fiber, resin, vulcanization aid, age resistor, fiber and filler being carried out into banburying mixing, mixed
Thing；
2) mixture for obtaining above-mentioned steps is by after mill mixing and roll-in, obtaining semi-finished product；
3) after the semi-finished product for obtaining above-mentioned steps are through over cure, encapsulant is obtained.
Preferably, the rubber is by the sheet rubber after mastication；
The temperature of the mastication is 40~50 DEG C；The thickness of the sheet rubber is less than or equal to 5mm；
The fiber is the fiber that surface is processed by silane coupler；
The silane coupler includes VTES, the vinyltrimethoxy silane, (β-first of vinyl three
Epoxide ethyoxyl) one or more in silane and γ-(2,3- glycidoxy) propyl trimethoxy silicane；
The temperature of the banburying mixing is 50~70 DEG C；The time of the banburying mixing is 10~15min.
Preferably, the step 1) it is specially：
Rubber and resin are put into banbury to be kneaded for the first time, vulcanization aid is added and after age resistor is kneaded again,
After input fiber and filler carry out third time mixing, mixture is obtained.
Preferably, the time of the first mixing is 1~1.5min；
The time for kneading again is 1~1.5min；
The time of the third time mixing is 8~12min.
Preferably, the pass of the mill mixing is 4~6 times；
The temperature of the mill mixing is 40~50 DEG C；
The preliminary roller linear velocity of the mill mixing is 23~24mm/min；
The roller gap of the mill mixing is 3~4mm.
Preferably, the temperature of the roll-in is 40~60 DEG C；
The roller speed of the roll-in is 23~24mm/min；
The roller gap of the roll-in is the 90%~95% of encapsulant thickness.
Preferably, the pressure of the vulcanization is 8~10MPa；
The temperature of the vulcanization is 140~150 DEG C；
The time of the vulcanization is 18~22min.
The invention provides a kind of encapsulant, it is obtained by including following raw material, the rubber of 18~28 weight portions, 5~10
The resin of weight portion, the vulcanization aid of 5~9 weight portions, the age resistor of 3~5 weight portions, the fiber of 20~45 weight portions and
The filler of 25~40 weight portions.Present invention also offers a kind of preparation method of encapsulant.Compared with prior art, the present invention
In for existing heat-resistant powder filler encapsulant production process, the solvent recovery and the problem of sewer for existing, from sealing
The proportioning of material is started with, using specific combination of materials, it is auxiliary in the proper ratio, in conjunction with distinctive preparation technology, obtain
Encapsulant with preferable performance, the encapsulant process does not need solvent or water, and process environmental protection is not related to molten
The problem of agent discharge, recycling and sewer.
Test result indicate that, encapsulant prepared by the present invention, its properties can meet or more than corresponding close in the industry
The examination criteria of closure material, can be close to corresponding professional standard QC/T684-2013.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, but
It should be appreciated that these descriptions are intended merely to further illustrate the features and advantages of the present invention, rather than to invention claim
Limitation.
The all raw materials of the present invention, originate to it and are not particularly limited, commercially buying or according to people in the art
Known to member prepared by conventional method.
The all raw materials of the present invention, are not particularly limited, present invention preferably employs technical pure or encapsulant system to its purity
The conventional purity that the field of making uses.
The invention provides a kind of encapsulant, it is obtained by including following raw material：
The present invention is not particularly limited to the rubber, with elastomeric material well known to those skilled in the art, ability
Field technique personnel can be selected and be adjusted according to practical condition, product quality and use requirement, of the present invention
Rubber preferably includes one or more in nitrile rubber, isoprene rubber, butadiene-styrene rubber, natural rubber and ACM,
More preferably nitrile rubber, isoprene rubber, butadiene-styrene rubber, natural rubber or ACM, most preferably nitrile rubber, day
Two or more in right rubber and butadiene-styrene rubber.The addition of rubber of the present invention is 18~28 weight portions, preferably 19
~27 weight portions, more preferably 20~26 weight portions, most preferably 22~24 weight portions.
The present invention is not particularly limited to the resin, with resin material well known to those skilled in the art, ability
Field technique personnel can be selected and be adjusted according to practical condition, product quality and use requirement, of the present invention
Resin preferably includes one or more in epoxy resin, ABS resin, phenolic resin, polyester resin and polyamide -66, more excellent
Elect epoxy resin, ABS resin, phenolic resin, polyester resin or polyamide -66 as.The addition of resin of the present invention be 5~
10 weight portions, preferably 6~9 weight portions, more preferably 6.5~8.5 weight portions, most preferably 7~8 weight portions.
The present invention is not particularly limited to the vulcanization aid, with vulcanization aid well known to those skilled in the art,
Those skilled in the art can be selected and be adjusted according to practical condition, product quality and use requirement, the present invention
The vulcanization aid preferably includes two kinds or many in Sulfur, peroxide, MBT, zinc oxide and magnesia
Plant, more preferably two kinds in Sulfur, peroxide, MBT, zinc oxide and magnesia.Sulphur of the present invention
Change the addition of auxiliary agent for 5~9 weight portions, preferably 5.5~8.5 weight portions, more preferably 6~8 weight portions, most preferably
6.5~8.5 weight portions.
The present invention is not particularly limited to the age resistor, with age resistor well known to those skilled in the art, ability
Field technique personnel can be selected and be adjusted according to practical condition, product quality and use requirement, of the present invention
Age resistor preferably includes tetramethylthiuram disulfide, BHT stabilizer, antioxidant 4010, age resistor
One or more in 4010NA and anti-aging agent RD, more preferably tetramethylthiuram disulfide, BHT
Stabilizer, antioxidant 4010, antioxidant 4010NA or anti-aging agent RD.The addition of age resistor of the present invention is 3~5 weight
Part, preferably 3.3~4.8 weight portions, more preferably 3.5~4.5 weight portions, most preferably 3.7~4.3 weight portions.
The present invention is not particularly limited to the fiber, is with the fine material of sealing material use well known to those skilled in the art
Can, those skilled in the art can be selected and be adjusted, this hair according to practical condition, product quality and use requirement
The bright fiber preferably include PPTA, cellulose fibre, carbon fiber, glass fibre and ore deposit fibre in one
Plant or various, more preferably PPTA, cellulose fibre, carbon fiber, glass fibre or ore deposit are fine.The present invention
The addition of the fiber be 20~45 weight portions, preferably 25~40 weight portions, more preferably 28~38 weight portions, most preferably
It is 30~35 weight portions.
The present invention is not particularly limited to described filler, with the filler for encapsulant well known to those skilled in the art
, those skilled in the art can be selected and be adjusted according to practical condition, product quality and use requirement, this
Invention described filler preferably includes barium sulfate, mica, vermiculite, fumed silica, kaolin, precipitated calcium carbonate, barite
With one or more in wollastonite, more preferably including barium sulfate, mica, vermiculite, fumed silica, kaolin, light
Matter calcium carbonate, barite or wollastonite.The addition of filler of the present invention is 25~40 weight portions, preferably 27~38 weight
Part, more preferably 30~35 weight portions, most preferably 31~34 weight portions.
Present invention also offers a kind of preparation method of encapsulant, comprise the following steps：
1) after rubber, fiber, resin, vulcanization aid, age resistor, fiber and filler being carried out into banburying mixing, mixed
Thing；
2) mixture for obtaining above-mentioned steps is by after mill mixing and roll-in, obtaining semi-finished product；
3) after the semi-finished product for obtaining above-mentioned steps are through over cure, encapsulant is obtained.
The choosing of raw material in selection and optimum principle, with aforementioned seal material of the present invention to the raw material in above-mentioned preparation method
Selecting can carry out correspondence with optimum principle, and this is no longer going to repeat them.
After rubber, fiber, resin, vulcanization aid, age resistor, fiber and filler are carried out banburying mixing by the present invention first,
Obtain mixture.
The present invention is the combination property of raising product, it is ensured that the integrality and operability of technique, the rubber are preferably
By the sheet rubber after mastication.
The present invention is not particularly limited to the mastication process of rubber in the preparation process, is known with those skilled in the art
Rubber mastication step, those skilled in the art can enter according to practical condition, product quality and use requirement
Row selection and adjustment.The present invention is not particularly limited to the design parameter of the mastication, with element well known to those skilled in the art
Refining procedure parameter, those skilled in the art can be selected according to practical condition, product quality and use requirement
Select and adjust, the temperature of mastication of the present invention is preferably 40~50 DEG C, more preferably 41~49 DEG C, more preferably 43~47
DEG C, most preferably 44~46 DEG C.
The present invention is not particularly limited to the design parameter of the sheet rubber, before rubber well known to those skilled in the art
Parameter after treatment, those skilled in the art can be carried out according to practical condition, product quality and use requirement
Selection and adjustment, the thickness of sheet rubber of the present invention are less than or equal to 5mm, more preferably less than or equal to 4.5mm, more preferably less than etc.
In 4mm.
The present invention is not particularly limited to the equipment of the mastication, is with conventional equipment well known to those skilled in the art
Can, those skilled in the art can be selected and be adjusted, this hair according to practical condition, product quality and use requirement
The equipment of the bright mastication is preferably opening rubber mixing machine.
The present invention is the combination property of raising product, it is ensured that the integrality and operability of technique, the fiber are preferably
The fiber that surface is processed by silane coupler.
The present invention is not particularly limited to the processing procedure of the silane coupler, with fibre well known to those skilled in the art
The technique for tieing up surface treatment, those skilled in the art can be according to practical condition, product quality and use requirement
Selected and adjusted.The present invention is not particularly limited to the specifically chosen of the silane coupler, with those skilled in the art
The well known silane coupler for Fiber strength, those skilled in the art can be according to practical condition, product
Quality and use requirement are selected and adjusted, and silane coupler of the present invention preferably includes vinyl triethoxyl silicon
Alkane, vinyltrimethoxy silane, ('beta '-methoxy ethyoxyl) silane of vinyl three and γ-(2,3- glycidoxy) propyl group three
One or more in methoxy silane, more preferably VTES, vinyltrimethoxy silane, vinyl
Three ('beta '-methoxy ethyoxyl) silane or γ-(2,3- glycidoxy) propyl trimethoxy silicane.
The present invention is not particularly limited to the design parameter of banburying mixing, with routine well known to those skilled in the art
The parameter of banburying mixing, those skilled in the art can enter according to practical condition, product quality and use requirement
Row selection and adjust, the temperature of banburying of the present invention mixing is preferably 50~70 DEG C, more preferably 52~68 DEG C, more preferably
55~65 DEG C, most preferably 57~63 DEG C；The time of banburying mixing of the present invention is preferably 10~15min, more preferably 11
~14min, most preferably 12~13min.
The present invention is not particularly limited to the equipment of banburying mixing, with conventional banburying well known to those skilled in the art
Mixing facilities, those skilled in the art can be selected according to practical condition, product quality and use requirement
And adjustment, the equipment of banburying of the present invention mixing is preferably banbury.
The present invention is the integrality and operability of guarantee technique, is further ensured that the combination property of product, pin of the present invention
Composition to raw material and it is respective the characteristics of, creative improves production technology, it is proposed that in batches, banburying mixing step by step
Technique, the step 1) it is particularly preferred as：
Rubber and resin are put into banbury to be kneaded for the first time, vulcanization aid is added and after age resistor is kneaded again,
After input fiber and filler carry out third time mixing, mixture is obtained.
The present invention is not particularly limited to the design parameter of the first mixing, and those skilled in the art can be according to reality
The condition of production, product quality and use requirement are selected and adjusted, and time of first mixing of the present invention is preferably 1~
1.5min, more preferably 1.1~1.4min, most preferably 1.2~1.3min.
The present invention is not particularly limited to the design parameter for kneading again, and those skilled in the art can be according to reality
The condition of production, product quality and use requirement are selected and adjusted, and the time for kneading again of the present invention is preferably 1~
1.5min, more preferably 1.1~1.4min, most preferably 1.2~1.3min.
The present invention is not particularly limited to the design parameter of third time mixing, and those skilled in the art can be according to reality
The border condition of production, product quality and use requirement are selected and adjusted, and the time of third time mixing of the present invention is preferred
It is 8~12min, more preferably 8.5~11.5min, most preferably 9~11min.
The present invention and then the mixture for obtaining above-mentioned steps are kneaded with after roll-in by mill, obtain semi-finished product.
The present invention is not particularly limited to the equipment of mill mixing, with conventional mill well known to those skilled in the art
Mixing facilities, those skilled in the art can be selected according to practical condition, product quality and use requirement
And adjustment, the equipment of mill of the present invention mixing is preferably mill.
The present invention is not particularly limited to the design parameter of mill mixing, with routine well known to those skilled in the art
The parameter of mill mixing, those skilled in the art can enter according to practical condition, product quality and use requirement
Row selection and adjust, the temperature of mill of the present invention mixing is preferably 40~50 DEG C, more preferably 41~49 DEG C, more preferably
43~47 DEG C, most preferably 44~46 DEG C；The preliminary roller linear velocity of mill mixing of the present invention, i.e. the preliminary roller linear velocity of mill
Preferably 23~24mm/min, more preferably 23.2~23.8mm/min, most preferably 23.4~23.6mm/min.Institute of the present invention
The roller gap of mill mixing is stated, i.e. the roller gap of mill is preferably 3~4mm, more preferably 3.2~3.8mm, most preferably
3.4~3.6mm.
The present invention is the combination property of raising product, it is ensured that the integrality and operability of technique, the mill mixing
Pass be 4~6 times, more preferably 4~5 times, so as to ensure that mixture can be preferably dispersed.
The present invention is not particularly limited to the equipment of the roll-in, and those skilled in the art can be according to actual production feelings
Condition, product quality and use requirement are selected and adjusted, and the equipment of roll-in of the present invention is particularly preferably mill.
The present invention is not particularly limited to the design parameter of the roll-in, with regular roll well known to those skilled in the art
Parameter, those skilled in the art can be selected according to practical condition, product quality and use requirement and
Adjustment, the temperature of roll-in of the present invention is preferably 40~60 DEG C, more preferably 42~58 DEG C, more preferably 44~56 DEG C, most
Preferably 46~54 DEG C.The roller speed of roll-in of the present invention, the i.e. roller speed of mill is preferably 23~24mm/min, more preferably
23.2~23.8mm/min, most preferably 23.4~23.6mm/min.The roller gap of roll-in of the present invention, the i.e. roller of mill
Gap is preferably the 90%~95% of encapsulant, i.e. final product thickness, more preferably 91%~94%, most preferably 92%
~93%.
After the last semi-finished product for obtaining above-mentioned steps of the invention are through over cure, encapsulant is obtained.
The present invention is not particularly limited to the design parameter of the vulcanization, with vulcanization well known to those skilled in the art
Parameter, those skilled in the art can be selected according to practical condition, product quality and use requirement and
Adjustment, the temperature of vulcanization of the present invention is preferably 140~150 DEG C, more preferably 141~149 DEG C, more preferably 143~147
DEG C, most preferably 144~146 DEG C.The pressure of vulcanization of the present invention is preferably 8~10MPa, more preferably 8.3~9.7MPa, most
Preferably 8.6~9.4MPa.
The present invention is not particularly limited to the equipment of the vulcanization, and those skilled in the art can be according to actual production feelings
Condition, product quality and use requirement are selected and adjusted, and the equipment of vulcanization of the present invention is preferably vulcanizing press.
The invention provides a kind of encapsulant and preparation method thereof.The present invention starts with from the proportioning of encapsulant, uses
Specific combination of materials, it is auxiliary in the proper ratio, in conjunction with distinctive preparation technology, obtained the sealing material with preferable performance
Material, the encapsulant process does not need solvent or water, and process environmental protection is not related to solvent discharge, recycling and arranges
The problem of sewage.
Test result indicate that, encapsulant prepared by the present invention, its properties can meet or more than corresponding close in the industry
The examination criteria of closure material, can be close to corresponding professional standard QC/T684-2013.
In order to further illustrate the present invention, a kind of encapsulant to present invention offer and its preparation with reference to embodiments
Method has been described in detail, but it is to be understood that these embodiments are that reality is carried out under premised on technical solution of the present invention
Apply, give detailed implementation method and specific operating process, simply to further illustrate the features and advantages of the present invention, and
It is not limiting to the claimed invention, protection scope of the present invention is also not necessarily limited to following embodiments.
Embodiment 1
1st, it is formulated, referring to table 1, table 1 is the composition of raw materials of the embodiment of the present invention 1.
Table 1
2nd, technical process
2.1 materials prepare
(1) drying glue：Summer, natural gum is dried 24 hours, and NBR is without drying；Winter, natural gum is dried 68 hours, fourth
Nitrile glue is dried 30 hours.Drying hole temperature is 80 DEG C~100 DEG C.
(2) dispensing：By formula and technological requirement, 0~50 gram of material precision is 0.2 gram of balance weighing；50~
1000 grams of material precision is that 5 grams of pan scale is weighed；More than 1000 grams of material precision is that 200 grams of platform balance is weighed.
Load weighted material is individually placed by following classification.
2.2 mastications
4.5kg NBRs, 2.8kg natural gums are put into mastication in the mill of roller spacing about 4mm, roller temperature must not exceed 50
DEG C, rubber is pressed into thin slice by extruding 3 times repeatedly, it is cooled to room temperature.
2.3 banburyings
1.2min is kneaded for the first time during banbury will be added by the NBR of mastication, natural gum and phenolic resin, is added
Sulphur, MBT, zinc oxide, magnesia, BHT and 4010NA mixing 1.5min, finally
Add PPTA, glass fibre, mica, precipitated silica and resin cure auxiliary agent, mica, leech
Mixing 10min is carried out in stone, aramid fiber, paper release silicone and wollastonite input banbury.Banbury thermometric instrument displays temperature
50 DEG C~60 DEG C.
2.4 mills are kneaded
Mill is preheated to 40 DEG C, roller gap is adjusted to 3.5mm, it is enterprising that the material from banbury out is placed on mill
Row is fully kneaded 4 times~5 times.Temperature is refused perhaps more than 50 DEG C in mixing process, and the preliminary roller linear velocity of mill is 23mm/min.
2.5 making sheet
Mill is preheated to 50 DEG C, roller gap is adjusted to 0.90mm (the liner plate of production 1.0mm), from mixing
Mill thick blankses out are placed in the mill of making sheet and carry out roll-in and go out sheet material.Temperature is refused perhaps more than 60 in mixing process
DEG C, the preliminary roller linear velocity of mill is 23mm/min.
2.6 cut-parts
The sheet material of different size is cut on request.Vulcanization is gone to according to actual conditions or rush base.
2.7 rush base
Concrete shape according to pad goes out blank, and blank profile uniformly goes out greatly 3~5 millimeters than finished product pad profile.
2.8 vulcanizations
Blank is put on vulcanizing press, vulcanizes 20min under conditions of being 8.5MPa in 148 DEG C of temperature, pressure, then
Vulcanizer is opened, the sheet material after vulcanization is taken out, encapsulant is obtained.
Encapsulant prepared by the embodiment of the present invention 1 is detected.Referring to table 2, table 2 is prepared for the embodiment of the present invention 1
Encapsulant detection data and in the industry corresponding encapsulant examination criteria contrast.
Table 2
With reference to People's Republic of China (PRC) automobile industry standard QC/T684-2013《Motorcycle and light motorcycle engine are used
Gasket seal technical conditions》" physical performance index of filled rubber pad " of the regulation of middle table 7 refers to the physical property of this product
Mark project and technical requirements are close.Product provided by the present invention has reached the requirement of professional standard.
Embodiment 2
1st, it is formulated, referring to table 3, table 3 is the composition of raw materials of the embodiment of the present invention 2.
Table 3
| Sequence number | Raw material title | Weight (Kg) | Percentage (%) |
| 1 | Nitrile rubber | 4.5 | 15 |
| 2 | Natural rubber | 2.8 | 7 |
| 3 | Phenolic resin | 2.4 | 6 |
| 4 | Sulphur | 0.45 | 1.5 |
| 5 | MBT | 0.45 | 1.5 |
| 6 | Zinc oxide | 1.6 | 4 |
| 7 | Magnesia | 0.4 | 1 |
| 8 | BHT | 0.8 | 2 |
| 9 | 4010NA | 0.8 | 2 |
| 10 | PPTA | 2 | 5 |
| 11 | Glass fibre | 8 | 20 |
| 12 | Mica | 8 | 20 |
| 13 | Precipitated silica | 2 | 5 |
| 14 | Wollastonite | 4 | 10 |
| It is total | 40 | 100 |
2nd, technical process
2.1 materials prepare
(1) drying glue：Summer, natural gum is dried 24 hours, and NBR is without drying；Winter, natural gum is dried 68 hours, fourth
Nitrile glue is dried 30 hours.Drying hole temperature is 80 DEG C~100 DEG C.
(2) dispensing：By formula and technological requirement, 0~50 gram of material precision is 0.2 gram of balance weighing；50~
1000 grams of material precision is that 5 grams of pan scale is weighed；More than 1000 grams of material precision is that 200 grams of platform balance is weighed.
Load weighted material is individually placed by following classification.
2.2 mastications
4.5kg NBRs, 2.8kg natural gums are put into mastication in the mill of roller spacing about 4mm, roller temperature must not exceed 50
DEG C, rubber is pressed into thin slice by extruding 3 times repeatedly, it is cooled to room temperature.
2.3 banburyings
1.3min is kneaded for the first time during banbury will be added by the NBR of mastication, natural gum and phenolic resin, is added
Sulphur, MBT, zinc oxide, magnesia, BHT and 4010NA mixing 1.3min, finally
Add PPTA, glass fibre, mica, precipitated silica and resin cure auxiliary agent, mica, leech
Mixing 10.5min is carried out in stone, aramid fiber, paper release silicone and wollastonite input banbury.Banbury thermometric instrument display temperature
50 DEG C~60 DEG C of degree.
2.4 mills are kneaded
Mill is preheated to 40 DEG C, roller gap is adjusted to 3.5mm, it is enterprising that the material from banbury out is placed on mill
Row is fully kneaded 4 times~5 times.Temperature is refused perhaps more than 50 DEG C in mixing process, and the preliminary roller linear velocity of mill is 23mm/min.
2.5 making sheet
Mill is preheated to 50 DEG C, roller gap is adjusted to 0.90mm (the liner plate of production 1.0mm), from mixing
Mill thick blankses out are placed in the mill of making sheet and carry out roll-in and go out sheet material.Temperature is refused perhaps more than 60 in mixing process
DEG C, the preliminary roller linear velocity of mill is 23mm/min.
2.6 cut-parts
The sheet material of different size is cut on request.Vulcanization is gone to according to actual conditions or rush base.
2.7 rush base
Concrete shape according to pad goes out blank, and blank profile uniformly goes out greatly 3~5 millimeters than finished product pad profile.
2.8 vulcanizations
Blank is put on vulcanizing press, vulcanizes 20min under conditions of being 8.5MPa in 145 DEG C of temperature, pressure, then
Vulcanizer is opened, the sheet material after vulcanization is taken out, gasket seal is obtained.
Gasket seal prepared by the embodiment of the present invention 2 is detected.Referring to table 4, table 4 is prepared for the embodiment of the present invention 2
Gasket seal detection data and in the industry corresponding encapsulant examination criteria contrast.
Table 4
With reference to People's Republic of China (PRC) automobile industry standard QC/T684-2013《Motorcycle and light motorcycle engine are used
Gasket seal technical conditions》" physical performance index of filled rubber pad " of the regulation of middle table 7 refers to the physical property of this product
Mark project and technical requirements are close.Product provided by the present invention has reached the requirement of professional standard.
Embodiment 3
1st, it is formulated, referring to table 5, table 5 is the composition of raw materials of the embodiment of the present invention 3.
Table 5
2nd, technical process
2.1 materials prepare
(1) drying glue：Summer, natural gum is dried 24 hours, and NBR is without drying；Winter, natural gum is dried 68 hours, fourth
Nitrile glue is dried 30 hours.Drying hole temperature is 80 DEG C~100 DEG C.
(2) dispensing：By formula and technological requirement, 0~50 gram of material precision is 0.2 gram of balance weighing；50~
1000 grams of material precision is that 5 grams of pan scale is weighed；More than 1000 grams of material precision is that 200 grams of platform balance is weighed.
Load weighted material is individually placed by following classification.
2.2 mastications
4.5kg NBRs, 2.8kg natural gums are put into mastication in the mill of roller spacing about 3.8mm, roller temperature must not exceed
50 DEG C, rubber is pressed into thin slice by extruding 3 times repeatedly, is cooled to room temperature.
2.3 banburyings
1.2min is kneaded for the first time during banbury will be added by the NBR of mastication, natural gum and epoxy resin, is added
Sulphur, MBT, zinc oxide, magnesia, BHT and 4010NA mixing 1.2min, finally
Add PPTA, glass fibre, mica, precipitated silica and resin cure auxiliary agent, mica, leech
Mixing 11min is carried out in stone, aramid fiber, paper release silicone and wollastonite input banbury.Banbury thermometric instrument displays temperature
50 DEG C~60 DEG C.
2.4 mills are kneaded
Mill is preheated to 40 DEG C, roller gap is adjusted to 3.5mm, it is enterprising that the material from banbury out is placed on mill
Row is fully kneaded 4 times~5 times.Temperature is refused perhaps more than 50 DEG C in mixing process, and the preliminary roller linear velocity of mill is 23mm/min.
2.5 making sheet
Mill is preheated to 50 DEG C, roller gap is adjusted to 0.90mm (the liner plate of production 1.0mm), from mixing
Mill thick blankses out are placed in the mill of making sheet and carry out roll-in and go out sheet material.Temperature is refused perhaps more than 60 in mixing process
DEG C, the preliminary roller linear velocity of mill is 23mm/min.
2.6 cut-parts
The sheet material of different size is cut on request.Vulcanization is gone to according to actual conditions or rush base.
2.7 rush base
Concrete shape according to pad goes out blank, and blank profile uniformly goes out greatly 3~5 millimeters than finished product pad profile.
2.8 vulcanizations
Blank is put on vulcanizing press, vulcanizes 20min under conditions of being 8.5MPa in 146 DEG C of temperature, pressure, then
Vulcanizer is opened, the sheet material after vulcanization is taken out, the sheet material after vulcanization is taken out, encapsulant is obtained.
Encapsulant prepared by the embodiment of the present invention 3 is detected.Referring to table 6, table 6 is prepared for the embodiment of the present invention 3
Encapsulant detection data and in the industry corresponding encapsulant examination criteria contrast.
Table 6
With reference to People's Republic of China (PRC) automobile industry standard QC/T684-2013《Motorcycle and light motorcycle engine are used
Gasket seal technical conditions》" physical performance index of filled rubber pad " of the regulation of middle table 7 refers to the physical property of this product
Mark project and technical requirements are close.Product provided by the present invention has reached the requirement of professional standard.
A kind of gasket seal for providing the present invention above and preparation method thereof is described in detail, used herein
Specific case is set forth to principle of the invention and implementation method, and the explanation of above example is only intended to help and understands
The method of the present invention and its core concept, including best mode, and also cause that any person skilled in the art can be real
The present invention is trampled, including is manufactured and is used any device or system, and the method for implementing any combination.It should be pointed out that for this skill
For the those of ordinary skill in art field, under the premise without departing from the principles of the invention, some changing can also be carried out to the present invention
Enter and modify, these are improved and modification is also fallen into the protection domain of the claims in the present invention.The scope of patent protection of the present invention
Be defined by the claims, and may include those skilled in the art it is conceivable that other embodiment.If these other realities
Applying example has the structural element for being not different from claim character express, or if they include the word with claim
Equivalent structural elements of the statement without essence difference, then these other embodiments also should be comprising within the scope of the claims.
Claims (10)
1. a kind of encapsulant, it is characterised in that be obtained by including following raw material：
2. encapsulant according to claim 1, it is characterised in that the rubber includes nitrile rubber, isoprene rubber, fourth
One or more in benzene rubber, natural rubber and ACM；
The vulcanization aid includes two kinds or many in Sulfur, peroxide, MBT, zinc oxide and magnesia
Kind；
The resin includes one or more in epoxy resin, ABS resin, phenolic resin, polyester resin and polyamide -66.
3. encapsulant according to claim 1, it is characterised in that the age resistor includes that the tetramethyl autumn is blue
One or more in nurse, BHT stabilizer, antioxidant 4010, antioxidant 4010NA and anti-aging agent RD；
The fiber includes the one kind in PPTA, cellulose fibre, carbon fiber, glass fibre and ore deposit fibre
Or it is various；
Described filler includes barium sulfate, mica, vermiculite, fumed silica, kaolin, precipitated calcium carbonate, barite and silicon
One or more in lime stone.
4. a kind of preparation method of encapsulant, it is characterised in that by comprising the following steps：
1) after rubber, fiber, resin, vulcanization aid, age resistor, fiber and filler being carried out into banburying mixing, mixture is obtained；
2) mixture for obtaining above-mentioned steps is by after mill mixing and roll-in, obtaining semi-finished product；
3) after the semi-finished product for obtaining above-mentioned steps are through over cure, encapsulant is obtained.
5. preparation method according to claim 4, it is characterised in that the rubber is by the sheet rubber after mastication；
The temperature of the mastication is 40~50 DEG C；The thickness of the sheet rubber is less than or equal to 5mm；
The fiber is the fiber that surface is processed by silane coupler；
The silane coupler includes VTES, the vinyltrimethoxy silane, ('beta '-methoxy of vinyl three
Ethyoxyl) one or more in silane and γ-(2,3- glycidoxy) propyl trimethoxy silicane；
The temperature of the banburying mixing is 50~70 DEG C；The time of the banburying mixing is 10~15min.
6. preparation method according to claim 4, it is characterised in that the step 1) it is specially：
Rubber and resin are put into banbury to be kneaded for the first time, vulcanization aid is added and after age resistor is kneaded again, input
After fiber and filler carry out third time mixing, mixture is obtained.
7. preparation method according to claim 6, it is characterised in that the time of the first mixing is 1~1.5min；
The time for kneading again is 1~1.5min；
The time of the third time mixing is 8~12min.
8. preparation method according to claim 4, it is characterised in that the pass of the mill mixing is 4~6 times；
The temperature of the mill mixing is 40~50 DEG C；
The preliminary roller linear velocity of the mill mixing is 23~24mm/min；
The roller gap of the mill mixing is 3~4mm.
9. preparation method according to claim 4, it is characterised in that the temperature of the roll-in is 40~60 DEG C；
The roller speed of the roll-in is 23~24mm/min；
The roller gap of the roll-in is the 90%~95% of encapsulant thickness.
10. the preparation method according to claim 4~9 any one, it is characterised in that the pressure of the vulcanization is 8~
10MPa；
The temperature of the vulcanization is 140~150 DEG C；
The time of the vulcanization is 18~22min.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108164773A (en) * | 2017-12-20 | 2018-06-15 | 合肥市易远新材料有限公司 | A kind of preparation method of the capacitor rubber of resistance to hot-seal |
| CN108178894A (en) * | 2017-12-20 | 2018-06-19 | 合肥市易远新材料有限公司 | A kind of High-temperature-rescapacitor capacitor seals rubber |
| CN108929470A (en) * | 2018-08-29 | 2018-12-04 | 三斯达（江苏）环保科技有限公司 | A kind of anti-aging rubber composition and preparation method thereof |
| CN109233115A (en) * | 2018-08-29 | 2019-01-18 | 三斯达（江苏）环保科技有限公司 | A kind of rubber composition with high-wearing feature, preparation method and applications |
| CN109438782A (en) * | 2018-11-01 | 2019-03-08 | 宁国华祥汽车零部件有限公司 | A kind of preparation method for the piston seal rubber that ageing-resistant effect is good |
| CN109897241A (en) * | 2019-03-12 | 2019-06-18 | 青岛科技大学 | Gas pressure regulator, governor epithelium sizing material and epithelium preparation process |
| CN109897243A (en) * | 2019-04-08 | 2019-06-18 | 中国农业大学 | A kind of composite material suitable for doing harvest corn machine cylinder spike-tooth |
| CN113527774A (en) * | 2020-04-16 | 2021-10-22 | 上海弗兆实业有限公司 | Processing technology of rubber sealing ring |
| CN115650632A (en) * | 2022-10-26 | 2023-01-31 | 河北慈宏新材料科技有限公司 | High-temperature-resistant vermiculite-based composite sealing gasket and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263903A (en) * | 2000-02-16 | 2000-08-23 | 太仓市宝马密封材料有限公司 | Sealing elastomer material reinforced by non-asbestos fibres and technology for compressing it into plates |
| CN101177489A (en) * | 2007-11-06 | 2008-05-14 | 南京工业大学 | Short carbon fiber-staple glass fiber hybrid reinforced rubber-based sealing composite material and preparation technique thereof |
-
2017
- 2017-01-18 CN CN201710037765.6A patent/CN106750663B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263903A (en) * | 2000-02-16 | 2000-08-23 | 太仓市宝马密封材料有限公司 | Sealing elastomer material reinforced by non-asbestos fibres and technology for compressing it into plates |
| CN101177489A (en) * | 2007-11-06 | 2008-05-14 | 南京工业大学 | Short carbon fiber-staple glass fiber hybrid reinforced rubber-based sealing composite material and preparation technique thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108164773A (en) * | 2017-12-20 | 2018-06-15 | 合肥市易远新材料有限公司 | A kind of preparation method of the capacitor rubber of resistance to hot-seal |
| CN108178894A (en) * | 2017-12-20 | 2018-06-19 | 合肥市易远新材料有限公司 | A kind of High-temperature-rescapacitor capacitor seals rubber |
| CN108929470A (en) * | 2018-08-29 | 2018-12-04 | 三斯达（江苏）环保科技有限公司 | A kind of anti-aging rubber composition and preparation method thereof |
| CN109233115A (en) * | 2018-08-29 | 2019-01-18 | 三斯达（江苏）环保科技有限公司 | A kind of rubber composition with high-wearing feature, preparation method and applications |
| CN109233115B (en) * | 2018-08-29 | 2021-07-06 | 三斯达（江苏）环保科技有限公司 | Rubber composition with high wear resistance, preparation method and application thereof |
| CN109438782A (en) * | 2018-11-01 | 2019-03-08 | 宁国华祥汽车零部件有限公司 | A kind of preparation method for the piston seal rubber that ageing-resistant effect is good |
| CN109897241A (en) * | 2019-03-12 | 2019-06-18 | 青岛科技大学 | Gas pressure regulator, governor epithelium sizing material and epithelium preparation process |
| CN109897243A (en) * | 2019-04-08 | 2019-06-18 | 中国农业大学 | A kind of composite material suitable for doing harvest corn machine cylinder spike-tooth |
| CN113527774A (en) * | 2020-04-16 | 2021-10-22 | 上海弗兆实业有限公司 | Processing technology of rubber sealing ring |
| CN115650632A (en) * | 2022-10-26 | 2023-01-31 | 河北慈宏新材料科技有限公司 | High-temperature-resistant vermiculite-based composite sealing gasket and preparation method thereof |
| CN115650632B (en) * | 2022-10-26 | 2023-10-31 | 河北慈宏新材料科技有限公司 | High-resistance Wen Zhidan-based composite sealing gasket and preparation method thereof |
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